I love how you can look at a face and see how it's made up of many circles. It's fun to do a quick drawing focusing on just that one shape, so I got out an Extra Superfine Faber Castell Pitt Artist pen and did a quick sketch focusing on using circles to build my face.
Next using the same pen and using the circles for my guidelines I added the details to the face. I'm not worried with perfection, this was done quickly with a pen, no pencil so no erasing. It's a great thing to get you to create quickly and fearlessly.